Process of conditioning and cooling yarn



F. KERSHAW PROCESS OF CONDITIONING AND COOLING YARN May'15, 1928. 1,670,262

Filed May 6, 1926 Patented May'15, 1928.

UNITED STATES PATENT OFFICE.

IBEDEBICK KERSHAW, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO PBOCTOB & SCHWARTZ, INCORPORATED, OF PHILADELPHIA, PENNSYLVANIA, A CORPO- RATION OI PENNSYLVANM PROCESS OF CONDITIONING AND COOLING- YARN.

Application filed May 6, 1926. Serial No. 107,296.

One object of my invention is to improve the process of conditioning and cooling yarn, whereby the yarn, as it comes from the drier, is first subjected to a steam or hot :5 water spray, and then subjected to cold water sprays to cool the yarn before it leaves the apparatus.

A further object of the invention is to improve the process of drying by separating E the hanks of yarn to allow the sprays to gain access to all portions of the hanks, and thus more uniformly humidify the yarn in a shorter period of time.

In the accompanying drawing:

Fig. 1 is a sectional View of the apparatus illustrating my improved method of conditioning and cooling yarn; and

Fig. 2 is a sectional view on the line 22, Fig. 1.

While I have shown one form of apparatus and a certain arrangement of the frames, circulating passages, and heating system, the apparatus may be modified materially without departing from the essen- 25 tial features of the invention.

1 is the casing of the apparatus, enclosing hi the present instance two drying compartments 2-2, a circulating warm moistening compartment 3, and a cool moistening compartment 4. These compartments are separated by vertical partitions 5, having openings for the passage of a conveyor and the yarn carried thereby.

At the side of each compartment 2, 3 and 4 is a circulating compartment, one compartment being separated from the other by a vertical transverse partition 5 and from the compartments 2, 3 and 4 by a vertical longitudinal partition 7, in which are openings for the circulating fans of the usual type. In each of the circulating compartments at the sides of the compartments 2, 2 and 3 are heating coils 8.

9 are conveyor chains of the usual type, and extending from one conveyor chain to the other are poles 10, on which the banks of yarn a are suspended. These hanks of yarn are usually spaced close together and they remain in this condition while paming through the drying compartment 2-2 in order to properly condition the yarn. When the hanks of yarn are close together, it is difiicult to produce a uniform conditioning I of the yarn in a short period of time without obtaining an excess of moisture at the ends of the skeins. This is caused by the fact that the air is filled with minute particles of moisture, and the yarn itself acts as a strainer, that portion of the yarn upon which the air strikes first receiving a greater portion of the moisture.

In order to prevent this, a transverse retarding-bar 11 is located in the warm moistening compartment 3 in the path of the lower ends or the hanks of yarn, so that as the hanks of yarn pass the bar they are held back in order to form an opening I). Directly below the opening b is a spraying device 12 having a series of nozzles, and thls spraying device in the present instance 1s connected with a steam supply pipe 13 and a drip pipe 15, although hot water may be used instead of the steam.

This spraying device projects sprays into the open space I), and the entire length of the hanks on either side of the opening are directly subjected to the spray. In this way the yarn is more uniformly humidified in a shorter period of time than heretofore.

In the compartment 4 there is another retarding-bar 11 and a cool water spraying device 14 which is connected to a water-pipe 16 and an air-pressure pipe 17. The air is used as a medium for atomizing the water. This cool water spray furnishes an additional amount of humidity and at the same time furnishes a valuable cooling effect, so that the yarn, after coming from the drier and conditioner, will be cool and retain its moisture.

The mechanism disclosed in this application is fully set forth and claimed in the patent granted to me on June 1st, 1926, No. 1,587,384, the present application being limited to the process.

I claim 1. The process herein described of drying or conditioning yarn, said process consisting in conveying the hanks of yarn through a drying compartment, then through a conditioning compartment, retarding one hank'of yarn after another as it passes through said conditioning compartment, and spraying the separated hanks to moisten the same.

2. The process herein described of conditioning and cooling yarn, said process consisting in conveying the hanks of yarn first through a drying compartment, then 3. The process herein described of drying 10 or conditioning yarn or similar material, said process consisting in conveying hanks of yarn through a drying compartment, then moistening the yarn after it leaves said compartment, and finally subjecting the 15 yarn to cool water sprays.

FREDERICK KERSHAW. 

